我正在使用此代码获取坐标:
_locationManager = [[CLLocationManager alloc] init];
_locationManager.desiredAccuracy = kCLLocationAccuracyBest;
_locationManager.delegate = self;
[_locationManager startUpdatingLocation];
然后我正在使用
- (void)locationManager:(CLLocationManager *)manager
didUpdateLocations:(NSArray *)locations
{
_currentLocation = [locations lastObject];
//Doing some stuff
//I am using stopUpdatingLocation but this delegate is called a lot of times
[_locationManager stopUpdatingLocation];
}
我实际上想要获得一次坐标,因为我想避免多次执行didUpdateLocation中的代码。我怎么能这样做?
答案 0 :(得分:0)
这是因为位置管理器多次触发其更新,逐步获得更准确的位置结果。
阻止这种情况的一种方法就是使用布尔值
BOOL _hasUpdatedUserLocation = NO;
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
if (!_hasUpdatedUserLocation) {
_hasUpdatedUserLocation = YES;
... // other code
}
}
或者,你可以杀死委托:
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
[locationManager setDelegate:nil];
... // other code
}